16294729
Description
Quiz by Deleted user, updated more than 1 year ago
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Created by Darren Hunt
about 6 years ago
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Copied by Darren Hunt
about 6 years ago
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Question 1
Question
Find the distance between (1,2,3) and (7,8,9).
Answer
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108
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sqrt(108)
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308
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sqrt(308)
Question 2
Question
What is the correct equation for a sphere? Select all that apply.
Answer
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(x-x0)^2+(y-y0^2)+(z-z0)^2=r^2
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sqrt((x1-x0)^2+(y1-y0)^2+z1-z0)^2)=r
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sqrt((x1-x0)^2+(y1-y0)^2)=r
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(x-x0)^2+(y-y0^2)=r^2
Question 3
Question
The distance of (-4,-8,7) to the xz-plane is 7.
Answer
- True
- False
Question 4
Question
Describe the surface where x^2+y^2+z^2=2x-6y+15.
Answer
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Sphere, radius sqrt(15), centered at (2,-6,0)
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Cylinder, radius sqrt(15), centered at (-2,6,0)
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Cylinder, radius 5, centered at (1,-3,0)
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Sphere, radius 5, centered at (1,-3,0)
Question 5
Answer
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z=e^y
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x=e^y
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z=sqrt(y)
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x=sqrt(y)
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